--- "David S. Miller" <davem@redhat.com> wrote: > Devices which implement CHECKSUM_HW, put the raw > 16-bit two's complement checksum of the entire > packet'ss > contents in skb->csum, we have to turn this into a > fully compute TCP checksum and verify it. It seems that setting "skb->ip_summed" to "CHECKSUM_HW" makes software do more. If a NIC can verify TCP/UDP checksum as well as calculate IP payload checksum, is it better to set "skb->ip_summed" to "CHECKSUM_UNNECESSARY" instead of "CHECKSUM_HW" even it can provide IP payload checksum? I don't think the software need to know TCP/UDP checksum if it knows the checksum is correct. Is it right? Bluesea __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
